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Acta Phys. -Chim. Sin.  2007, Vol. 23 Issue (04): 601-604    DOI: 10.3866/PKU.WHXB20070429
Note     
Preparation of Cu/Sr3Ti2O7 and Its Photocatalytic Activity of Watersplitting for Hydrogen Evolution
FANG Shu-Mei; OU Yan; LIN Jing-Dong; LIAO Dai-Wei
Department of Chemistry, State Key Laboratory of Physical Chemistry of Solid Surfaces, Institute of Physical Chemistry, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
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Abstract  Sr3Ti2O7 photocatalyst with perovskite-layered structure was synthesized by polymerized complex method (PCM). Cu ion as an effective dopant was loaded onto Sr3Ti2O7 catalyst. Cu/Sr3Ti2O7 catalyst was applied in the mixture of water and methanol, methanol was used as a sacrificial agent under ultra-violet irradiation, and the catalyst was characterized by XPS, XRD, and UV-Vis DRS. The results showed that Cu existed in several kinds of valence and the photocatalytic activity of Cu/Sr3Ti2O7 was superior to that of pure Sr3Ti2O7. Cu+ and adsorbed oxygen can accelerate the interfacial electron transfer. When the amount of Cu was 1.5%(w), the best catalytic effect was obtained and the stable average hydrogen evolution rate was about 550-600 μmol·h-1. The Cu/Sr3Ti2O7 after reduction attained the highest hydrogen evolution rate that was close to 1140.8 μmol·h-1.

Key wordsPerovskite      Water splitting      Hydrogen      Photocatalysts      Sr3Ti2O7     
Received: 10 October 2006      Published: 09 March 2007
MSC2000:  O644  
Corresponding Authors: LIAO Dai-Wei     E-mail: dwliao@xmu.edu.cn
Cite this article:

FANG Shu-Mei; OU Yan; LIN Jing-Dong; LIAO Dai-Wei. Preparation of Cu/Sr3Ti2O7 and Its Photocatalytic Activity of Watersplitting for Hydrogen Evolution. Acta Phys. -Chim. Sin., 2007, 23(04): 601-604.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20070429     OR     http://www.whxb.pku.edu.cn/Y2007/V23/I04/601

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